CVE-2026-20210
Medium · 5.4CVSS
5.4
EPSS
0.2%
Published
May 14, 2026
CISA due date
—
The record
A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker with read-only permissions to modify configurations and perform unauthorized actions on an affected system. This vulnerability exists because of a failure to redact sensitive information within device configurations and templates. An attacker could exploit this vulnerability by elevating their read-only permissions to those of a high-privileged user. A successful exploit could allow the attacker to access or modify configuration settings within Cisco Catalyst SD-WAN Manager as a high-privileged user.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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Related vulnerabilities
- CVE-2026-20209 A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage… CWE-779
- GHSA-xp4f-g2cm-rhg7 PocketMine-MP has LogDoS by many junk properties in client data JWT in LoginPacket CWE-779
- CVE-2026-28718 Denial of service due to insufficient input validation in authentication logging. CWE-779
- CVE-2025-69230 AIOHTTP Vulnerable to Cookie Parser Warning Storm CWE-779